@zimmerjo1 - Glad to hear it! Which part worked? The 127.0.0.1 address or the IP of your Pi?

I think the issue is that the command you need to run isn’t “sudo pm2 startup”.
If you run “pm2 startup”, the real command you’ll need to run appear

pi@raspberrypi:~ $ pm2 startup [PM2] Init System found: systemd [PM2] You have to run this command as root. Execute the following command: sudo env PATH=$PATH:/usr/bin /usr/lib/node_modules/pm2/bin/pm2 startup systemd -u pi --hp /home/pi

@zimmerjo1

cd ~/MagicMirror/modules/MMM-FRITZ-Box-Callmonitor npm install